Sand Mountain Recreation Area (BLM, 60 miles east of Fallon) — a 600-foot single dune that hums when the wind blows. UTV and sandboard rentals via Reno-area outfitters. Day-two Truckee River whitewater (Class II-III, Sierra Adventures runs the half-day from $89). Day three is downtown Reno: Eldorado-Silver Legacy-Circus Circus block (all connected by skyway), the Truckee River Whitewater Park practice rapids in the middle of downtown, and the casinos for the bachelor's last legal late-night. Sleep at the Eldorado or Atlantis. Reno-Tahoe (RNO) is direct from most western hubs.
Five quick questions, then we build the full itinerary — lodging, daily schedule, dining, bars, the group-chat message — and drop you into a Trip Room you can share with the crew.